tb_nvm_write_data(9)

📦 version 7.3.1, in nixpkgs unstable

💅 tb_nvm_write_data(9) — from the Kernel API Manual, bestie

okay so this is tb_nvm_write_data, and it lives in the Kernel API Manual section 9 (that's the kernel-functions girly). Let me tell you everything about it, no cap. 🫶

✨ NAME ✨

tb_nvm_write_data — literally just "Write data to NVM". That's the whole vibe. 💖

🌸 SYNOPSIS 🌸

int tb_nvm_write_data (unsigned int address , const void *buf , size_t
size , unsigned int retries , write_block_fn write_block , void
*write_block_data );

like, six arguments. she's high maintenance but she's worth it. 👑

🎀 ARGUMENTS 🎀

  • address — the start address on the flash. where the magic happens, basically. 📍
  • buf — the buffer where the data is copied from. it's the source, the main character. 🌟
  • size — size of the buffer, in bytes. don't fumble this one bestie. 📏
  • retries — number of retries if the block write fails. yes, she tries again. persistence ate. 🔁
  • write_block — the function that writes block to the flash. a whole callback, iconic. ⚡
  • write_block_data — data passed to write_block. it's giving "plus one". 💌

🦋 DESCRIPTION 🦋

So this is a generic function that writes data to NVM, or to an NVM-like device. that's it, that's the whole description — she's a generalist, she's versatile, she contains multitudes. ✨ lowkey obsessed with how straightforward that is.

🌈 RETURN 🌈

  • 0 on success 🎉
  • negative errno otherwise 😭
fr fr, check that return value. negative errno is NOT a vibe and she will not warn you twice. 💀

👑 SEE ALSO 👑

Kernel file ./drivers/thunderbolt/nvm.c and honestly the whole friend group:

go read all of them, iykyk. 📚💅

aaaand that's the page!! 🍓 sign-off time: this one's straight out of ./drivers/thunderbolt, dated October 2026 — so she's lowkey from the future, slay. mwah, go write some NVM data responsibly 🧚💜

📦 where this page comes from